Which means it does not reach final test until it is coated either. Anti-reflective coating can change how a lens behaves under impact. That is why the impact test has to come after the coating goes on, not before. The standards are explicit about it. ISO 8980-4 requires at least twenty four hours to elapse after coating before any type test is carried out - an acknowledgement, written into the text, that a freshly coated lens is not yet a finished one. EN 168 and ISO 12312-1

The first consumer glasses with built-in eye tracking were unveiled in March and are now in production for a December ship. By June, reference designs were on show at AWE that let any manufacturer add it without developing it from scratch: sensor, IR illumination and tracking stack pre-integrated, ready to drop into a frame. Gaze has stopped being an input method and become a context signal, and the next generation will act on what you look at before you ask it to. Impressive